import bpy

import os

for image in bpy.data.images:

? ? try:

? ? ? ? old_path = bpy.path.abspath(image.filepath)

? ? ? ? if not os.path.isfile(old_path):

? ? ? ? ? ? print("Image block:", image.name, "is missing.")

? ? ? ? ? ? for material in bpy.data.materials:

? ? ? ? ? ? ? ? if material.use_nodes:

? ? ? ? ? ? ? ? ? ? for node in material.node_tree.nodes:

? ? ? ? ? ? ? ? ? ? ? ? if node.type == 'TEX_IMAGE' and node.image == image:

? ? ? ? ? ? ? ? ? ? ? ? ? ? print("Image block is used in material of object:", material.name)

? ? except Exception as e:

? ? ? ? print('Error when processing image:', image.name)

? ? ? ? print('Error details:', str(e))